Lock and more particularly door lock for automobiles



NOV. 2, 1937. 2,098,012

LOCK AND MORE PARTICULARLY DOOR LOOK FOR AUTOMOBILES M. PAPST FiledSept. 8, 193:5

4 Sheets-Sheet 1 Fig.1- F2 Inventor:

Nov. 2,- 1937. M. PAPS+ LOCK AND MORE PARTICULARLY DOOR LOCK FORAUTOMOBILES Filed Sept. 8, 1933 4 Sheets-Sheet 2 l m Y 8 as 27 as 4 a 224- G Inventor:

Nov.-2,- 1937. M. PAPS'T LOCK Ami MORE PARTICULARLY DOOR LOOK FOR AUTOMOB ILES Filed Sept. 8, 1 933 4 Sheets-Sheet 3' Invfifor: MAX PA'PST rrcnn:y

Nov. 2, 1937.

M. PAPST 2,098,012

LOCK AND-MORE PARTICULARLY DOOR LOOK FOR AUTOMOBILES 4 Sheets-Sheet 4Filed Sept. 8, 1933 In ventor:

UNITED STATES PATENT OFFICE LOCK AND MORE PARTICULARLY noon LOCK ronAUTOMOBILES Max Papst, Paris, France Application September s, 1933,Serial No. 688,608 In Germany December 16, 1932 12 Claims. (Cl. 70-208)The present invention relates to looks and more Referring now to Figs.1, 2 and 3, the lock in the particularly to door locks of automobiles.Its door frame I has a roll-back 2 which, when being main object is theprovision of a lock, the handle turned, is able to operate theconventional door of which, when locked, is inaccessible to inadcatch(not shown). in a suitable manner. Rollvertently violent orsurreptitious actions. Anback 2 has a square hole and encompasses the 5other object of the invention is to provide means square shank 3 of thedoor handle. Shank 3 is by which the number of lock parts projectingaxially movable within the roll-back 2 in a manfrom the door surface maybe sensibly. reduced. ner that the handle may be pushed from its oper-The invention essentially consists in a door ative position (Fig. 1)towards the left side in handle having an inoperative and an operativethe drawing into its inoperative position (Fig. 2) 10 positionrespectively close to or remote from the against the action of a spring4. Means are prodoor surface, means for automatically moving the videdfor automatically locking the handle in its handle into its operativeposition, meansfor autotwo end positions and other means for removingmatically locking the handle in its two end posithe locking means fromtheir locking position tions and means under the control of theoperunder the control of an operator. For this pur- 15 ator forreleasing the elements locking the pose, a cylinder lock 'lis providedin a cylindrical handle. hereof the handle shank 3. This cylinder lock 1Further objects, features and advantages will hasa rotatableconventional plug 5 and is probe apparent from the following descriptionand vided witha set of bores 30 in which detents fixnay appendingdrawings of examples embodying my slide. ,The detents are engagedbysprings 3| 20 invention. located in the bores 30. Diametricallyopposite to In the drawings are: i the bores 30 another set of bores 32with springs Fig. 1 a longitudinal section of a look as per 33 is alsoprovided in the cylinder. Tumblers 36 my invention with a locking devicehoused within are slidably arranged in cylinder plug 5 in such a :5 thehandle shank, in the operative position, manner that they may contactthe detents 6 and Fig. 2 a cross section of the lock shown in slide intothe bores 32 respectively against the Fig. 1, pressure of the springs33. In Fig. 3 the lock is Fig. 3 a similar view to Fig. 1, the handle,howshown in its lockedposition in which the detents 'ever, in itsinoperative position, protrude from the bores into the cylinder plugFigs. 4 and 5 longitudinal sections of a modifi- 5, the key beingremoved. If a key is inserted into 30 cation in the operative and in theinoperative the key slot 34 the tumblers move the respective positionrespectively, j detents 6 against the pressure of springs 3| out of Fig.6 a cross section alongline a--b of Fig. 4, engagement with plug 5whereupon the latter may Figs. 7 and 8 cross sections along line cd ofbe turned about an angle of 180 (Fig. 1). 1n

Fig. 4, and Figs. 9 and 10 crosssections along this position the key 8may be retracted because line ej of Fig. 5, illustrating variouspositions the tumblers are able to enter the respective of the latchmember which locks the handle of bores 32. A cylinder lock of the typedescribed the lockas per Figs. 4 and 5, i in the foregoing is well knownin the art and Figs. 11 and 12 longitudinal sections of another does notform part of my invention. At its left- 49 modificationin the operativeand in the inoperhand end, the cy P 8 5 18 Provided w a ative positionrespectively, I bore in which a tongue-like latch bolt 9 is slidablyFigs. 13 and 14 longitudinal sectionsof again mounted and urged Out y asp "I So as another embodiment-of my invention, in the operto passthrough a corresponding opening in shank ative, and inoperativepositionof the handle 're- 3 and to enter a recess I! oftheroll-back 2. The

-, spectively, j

' Figs. 15 and 16cross sections along line A--B ing over an arc of 180,and the opening in shank of Fig. 13 showing the handle locked against 3,through which latch bolt 9 is able to project, longitudinal displacementand. respectively, dishas the form of a peripheral slot of acorrespondengaged, ing arc length. Starting from the bottom end I2 50Fig. 17 a longitudinal section of a modi'fication of the groove II andatright angles to said recess 50 with the handle inoperative position,and ll, an inclined path l3 leads to another periph- Fig. 18 a crosssection along line O- D of Fig. eral groove M in the roll-back, and asecond-in- 17. clined p'a'th l5 connectsthe top ends of the groovesThroughout the drawings, like characters indl- II and H. Due totheinclination of paths I3 care corresponding parts. v and I5 tongue 3 canreadily enter path l3 from '55 recess I] is shaped as a peripheralgrooveextendgroove II, and path I5 from groove I 4 while it is barredfrom leaving the grooves on the respective other paths.

To the outer surface of the door I, an escutcheon or handle housing I6is fitted in which the handle rests when in its inoperative position perFig. 3.

The device functions in the following manner: In its operative positionof Fig. 1, the handle with its shank 3 can be turned to operate rollback2 due to their square connection. The handle and shank cannot be pushedback into their inoperative position by an unauthorized person, sincetongue 9 in groove II prevents an axial displacement of shank 3 relativeto rollback 2. However, when key 8 is inserted into the slot 34 andturned, plug 5 takes the tongue 9 along in the direction of the arrow inFig'. 2

until the tongue reaches the bottom I2 of groove II. At this point, thetongue is opposite the entrance of path I3. Now, the handle and theshank 3 may be pushed back, that is, to the left side of the drawing,against the action ,of spring 4 while tongue 9 compressing spring I9,travels along path I3. The axial displacement of the handle is blockedas soon as tongue 9 snaps into groove I4 (Fig. 3). In this position,

the handle is housed in the escutcheon, and,

therefore, inoperative and practically inaccessible to a surreptitiousaction. In order to bring the handle back into its operative position,the operator has to turn tongue 9 by means of plug 5 in the reversedirection. As soon as the tongue has reached the top end of groove I4and the. entrance of path I5, spring 4 returns the handle and shank 3 tothe position of Fig. 1.

Inv the modification illustrated in Figs. 4 to '10, the latch bolt forblocking the handle and shank against axial displacement is arranged soas to engage the shank from the outside. Fig. 4 shows handle 43 andshank M in their operative position, and Fig. 5 shows the same pushedback against the action of spring 4. In this inoperative position, thehandle fits in a housing 2| arranged on the outersurface of the door I.Shank 4| and roll-back 42 are coupled for rotationby external andinternal square surfaces respectively, and movable with relation to eachother in axial direction.

A cylinder lock 31 of a type similar to lock 1 shown in Figs. 1 and3-'is arranged within shank M of handle 43. Lock 31 differs from lock Iinasmuch as it permits a rotation of only about Consequently the twosets of bores for the detents and tumblers respectively are arranged atright angles to each other rather than diametrically opposite each otheras in the first mentioned embodiment, only one set of bores 38 beingvisible in Figs. 4 and 5. The cylinder plug 45 of lock 31 has anelongated shape and is provided with two arms or lugs 21 and 28 whichcorrespond with the two end positions of the handle. These lugs arestaggered with regard to each other for a distance equal to thethickness of one of the lugs (see Fig. 6), and adapted to move incorresponding recesses 25 and 26 of the handle shank 4|. A. latch bolt23 is adapted to enter the. said recesses 25 and 2.6

respectively and is normally held therein by a;

spring 39 adapted to bear against pins 40.se-' cured to bolt 23. Spring39 is fastened to a pin on which latch bolt '23 is pivotally mounted.Spring 39 and pins 40. are indicated only in Figs. 9 and I0 in order toavoid overcrowding vof the other-figures. Pin 24 is'fastened to a' plate29 having a square hole corresponding to the square of shank 4I. Plate29 is carried by shank 4| and adapted to be turned together with thelatter wherrthe handle is in its operative position of Fig.4.The'manipulation of the device is the same as in the preceding example.In the position of Fig. 4, the latch bolt 23 engages recess 25 (Fig. '1)and prevents an axialdisplacement of the handle, which may be turned inorder to operate the roll-back 42.

In order to bring the handle back to its inoperative position, thecylinder plug 45 must be turned in the direction of the arrow in Fig.'1. This causeslug 21 to engage latch bolt 23, and to swing it into theposition of Fig. 8. Thus the shank M is freed for axial displacementagainst the action of spring 4 (Fig. 5) until latch bolt 23 is able toengage the recess 26 (Fig. 9), and to arrest the shank and the handle 43embedded in the housing 2|. In order to remove the handle from thisinoperative position, cylinder plug 45 is to be turned in the reversedirection. This causes lug 28 (Fig. 9) to remove latch bolt 23 fromrecess 26 whereafter spring 4 will push the handle 43 outward untillatch bolt 23 arrests it again in the position of Fig. 4.

As will be apparent, the embodiments of my invention as per Figs. 1 to10 have as a prerogative a roll-back of ample size for encompassing theparts movable within its hollow space. Such constructions are preferableif the whole door ready exists in the door and is to be subsequentlyequipped with thedevice as per my invention, other structures of thehandle mechanism are more preferable, such as illustrated in Figs. 11 to18. Of particular advantage is the structure shown in Figs. 11 and 12which permits the whole mechanism as an entirety to be inserted into thedoor and rigidly connected with the standard roll-back.

In these figures, door I is provided with a door lock having aconventional or standard rollback 91 at its inner surface, and with ahousing 86 at its outer surface into which housing the handle 98 fits inits inoperative position (Fig. 12) Housing 86 has a tubular extensionorstationary sleeve 81 protruding into a bore 88 of the door, coaxial withthe roll-back 91. A projection 95 is secured to the bottom of theinterior 9541 of the housing 86. by suitable means such as screw 22, andhandle 98 has a recess 98. Housing 88 encompassing the handle 98 as Wellas projection 95 rigidly connected with the door and engaging recess 96are means for preventing rotation of the handle in its inoperativeposition, and it is obvious that either one suffices for this purpose,

and that the one is an auxiliary means of the,

other one if both are simultaneously provided.

Within the tubular extension 81, a sleeve 99 is rotatably mounted whichhas a bottom 82 and a square shaft projection 99a fitting into theroll-back 91 and adapted to be rigidly connected therewith. In order tofacilitate the assembling of the mechanism it is of advantage if thedircumference of the projection 99a. is smaller than direction. Inopposite portions of the wall of the sleeve 99, two apertures 89 and 89arespectively are arranged at an axial distance from each othercorresponding with the end positions of the handle. A coil spring H3,insertedin the sleeve 99 bears against the shank 9801. with one of itsends and against an abutment formed by the sleeve bottom 82 with itsother end.

Shank 98a. is hollow and has two recesses 84 and 84a diametricallyopposite one another in its wall. A latch bolt H8 is inserted in theshank 98a so as to be capable of sliding at right angles to the shankaxis and to pass through either one of the recesses 84 and 84a and toenter apertures 89 and 89a respectively, thus locking the shank 98arelative to sleeve 99 against axial displacement in the two endpositions. Latch bolt H8 is so dimensioned that in an intermediateposition, it does not protrude beyond the. circumference of the shank98a. A cylinder lock H2 is inserted into the shank and a hair-pin spring85 is secured to cylinder lock H2 in a manner that one arm of the springbears against a projection 83 of the lock while the other free endextends through a hole IH of the latch bolt H8 and tends to displacethis latch bolt towards the outside.

The square shaft 990. may have a bore 98 in order to permit theinsertion of a tool into the interior of the mechanism in an emergency.For similar reasons an emergency spring 93 may be provided betweenhandle 98 and housing 86 capable of creating a gap between these partsfor the insertion of another tool if the handle should fail to return toits operative position.

In order to assemble the mechanism in the door which has a roll-back 91for operating the door catch latch bolt H8 and cylinder lock H2 withspring 85 will be inserted into shank 98a," and spring H3 housed insleeve 99. Thereafter shank 98a will be put in sleeve 99 therebycompressing spring H3 until latch bolt H8 snaps into one of the recesses89 or 89a. This being done, sleeve 99 is slipped through the tubularextension 81' of the handle housing 88 and the whole mechanism, as anentirety, pushed into the bore 88 whereby the square shaft 99a entersroll-back 91. When the square shaft 99a has been secured to roll-back 91and the handle housing 88 to the door surface, the mechanism is ready tobe operated.

Starting .from the operative position as per Figure 11, a turn of lockH2 retracts latch bolt I I8. Then, the handle may be pushed back untillatch bolt H8 snaps into,the opening 89 under the action of spring 85.In order to return handle 98, lock H2 is'turned in the reversedirection. Thereby spring 85 is tensioned in a manner to retract latchbolt H8 from opening 89 and to keep it against the interior side of theopposite wall of sleeve 99. When latch bolt H8 has left opening 89,spring H3 urges shank 98a outward into the operative position which isreached when latch bolt I I8 catches in opening 89d.

The embodiment of my invention, as per Figures 13 to 16 operates withouta rotatable sleeve, handle shankv 234 being directly rotatable withintubular extension or stationary sleeve 281 of the handle housing 286.The latch bolt, capable oi lockin'g shank 234 in its operative and inroperative positions, consists of a 'flat spring 22l surrounding thestationary sleeve 281 and secured against longitudinal displacementthereon. One of its ends is rolled into an eye as at I and is capable ofprotruding through an opening of sleeve 281 into recesses 222 and 223respectively of shank 234. The handle shank is hollow and enclosesa'cylinder lock 221 similar to that shown in Fig. 1 with a tubularextension 224. Extension 224 is provided with two lugs 225 and 226 whichare able to move in grooves 222 and 223 respectively of the shank andare capable of displacing eye I of latch bolt spring 22I so as todisengage the handle for its longitudinal displacement. For thispurpose, the lugs 225 and 228 are angularly staggered with regard toeach' other and arranged in different planes. A square driver bar 228 issecured to the roll-back 91 and shank 234 has bottom228 with a squarehole into which the driver bar 228 fits.

In the operative position of the handle, latch bolt spring 22l engagesrecess 222 in shank 234 (as in Fig. On a turn of the lock 221, lug 225removes spring 22! from this recess in a manner that the handle may bepushed into the inoperative position of Fig. 14 spring 22| enteringrecess 223. On a turn of lock 221 in the reverse direction, lug 226heaves spring 22l out of recess 223 whereupon the spring 2i3 pusheshandle and shank 234 back into the operative position.

The embodiment of Figs. 1? and 18 shows a modification of the latch boltmechanism illustrated in the preceding figures. A locking sleeve 288encloses the handle shank 235. The cylinder lock 229 is provided with alug 238 extending through a slot in the wall of shank 235 and connectedto locking sleeve 288. When the cylinder lock is turned, lug 238 movesthe sleeve 288, and turns it about-its center line. The eye of thelocking spring 22l secured to sleeve 291 of the handle housing 296projects through openings 232 and233 respectively of the shank and thesleeve 288. When sleeve 288 is turned by means of cylinder lock 229 andits lug 238, it

enters between the spring eye and the handle k shank 234 and thusdisengages the latter from the said spring eye in a manner that thehandle may be displaced in an axial direction into one of its endpositions.

Wish to emphasize that I described and illustrated a. cylinder lock inthe handle merely as an example of means adapted to move the latch boltmember in a suitable manner and that other means within'the scope of myinvention are obvious by which the same result may be obtained.

I claim:

1. In a doorlockhaving a roll-back the combination of a handle having ashank, said handle and shank having an operative and an inoperativeposition, coupling means coaxial with said shank and adapted to preventrelative rotation of said shank and said roll-back and to permit axialdisplacement of said shank and said handle into the operative positionandout of the same against the door surface, means in connection v withthe door surface for preventing rotation of said handle in itsinoperative position, a spring actuated latch bolt having two lockingpositions with respect to said shank and adapted to automatically locksaid handle in its two end positions. a cylinder look within the Shank,and eccentric means adapted to retract the latchbolt from one of itslocking positions and to tension the latch bolt spring for engagement ofthe latch bolt in the, second locking position on a turn of the lock inone direction, and to retract the latch bolt from its'second lockingposition and to tension the latch bolt spring for engagement of the Iand shank having an operative and an inoperative position, a sleeverigidly connected with the roll-back and adapted to axially-guide saidshank and to couple said roll-back and said shank for rotation, a springbetween said roll-back and said shank, a spring actuated latch bolt,holes in said sleeveand corresponding holes in said shank adapted to beengaged by said latch bolt in the two end positions of the shank, acylinder look within the shank, the latch bolt spring secured to saidcylinder lock, and the cylinder lock adapted to tension said latch boltspring in a sense to withdraw the latch bolt from one of itslockingpositions and to push it into its other locking position on a turn ofsaid lock.

3. A handle lock comprising 'a handle having a shank, said handle andshank having an operative and an inoperative position, a locking devicefor said handle comprising a latch bolt adapted to move at right angleswith respect to the axis ofthe shank into two locking positions, oneopposite the other one, a cylinder look within the shank, a springsecured to said lock and engaging said latch bolt, said spring adaptedto force said latch bolt in one direction and, on a turn of the lock, inthe opposite direction.

'4. A handle lock comprising a handle having a shank, said handle andshank having an operaof the shank into two locking positions, a cylinderlock within the shank, a spring engaging said latch bolt and-adapted tobe tensioned in a sense to remove said latch bolt from one lookingposi-- tion and to prepare it for engagement in the second lockingposition on a turn of the lock in one direction, and to remove the latchbolt from the second locking position and to prepare it for engagementin the first locking position on a turn of the lock in the reversedirection.

5. In a door lock having a roll-back the combination of a handle havinga shank provided with holes, a sleeve formed integral with the rollbackand receiving the shank, a tongue-like member adapted to move radiallyto the axis of the shank under, spring pressure, two semi-circulargrooves in the sleeve and two inclined paths from one groove to theother one, and means within the shank adapted to turn said tongue-likemember, said member being adapted to move in said grooves and on saidinclined paths.

6. In a door lock having a roll-back the combination of a handle havinga shank provided 'with holes, a sleeve formed integral with the roll"groove to the other one and a cylinder lock withment of said shank andlock,

7. In a door lock having a roll-back the combination of a handle havinga hollow shank, a sleeve secured to the door and in which the shank isadapted to slide'without rotation with respect to the roll-back, aspring between the roll-back and the shank, said spring surrounding saidguide rod and adapted to automatically move the shank into the operativeposition, a latch bolt resiliently secured to the sleeve and adaptedtoenter the shank, and means within the shank for relar grooves in saidshank, a locking spring secured to said sleeve and adapted to enter said,shank grooves, a rotatable plug within said shank and provided with twolugs engaging said shank grooves, and means for turning said plug.

9.In a door'lock having a roll-back the combination of a handle having ashank, said handle and shank having an extended or operative and aretracted or inoperative position, a rotatable sleeve adapted to axiallyguide said shank within said sleeve and to prevent relative rotationbetween said shank and said sleeve, an abutment within said shank at itsend remote from said handle, a coil spring'within said sleeve adapted tobear with one of its ends against said shank and with its other endagainst said abutment, resiliently operated latch bolt means within.said shank and adapted to engage said sleeve and to automatically locksaid handle in its two end positions, means within said shank operablefor moving said latch bolt means from its locking positions, and meanscoaxial with said sleeve and roll-back.

10. A handle lock comprising a handle having a shank, said handle andshank having an extendedor operative and a retracted or inoperativeposition, a locking device for said handle comprising a cylinder lockwithin said shank, a latch bolt movable with said cylinder lock and atright angles with respect to the axis of said shank in two lockingpositions, a spring tending to shift said latch bolt into its lockingpositions, and guiding means outside said shank for moving said latchbolt from one locking position and tensioning said spring for theengagement of the latch bolt in its second locking position on a turn ofthe lock and a shifting of the handle in one direction, and for movingthe latch bolt from its second locking position and tensioning thespring for the engagement of the latch bolt-in its first lockingposition on a turn of the lock and the shifting of the handle in theopposite direction.

11. In a door lock having a roll-back, the com-. bination of a handlehaving a shank, said handle and shank having an extended or operativeand moving said latch bolt from its engagement with a; retracted orinoperative position, coupling' means coaxial with said shank andadapted to is adapted to move axially into the operative permanentlyhold said shank and said roll-back coaxial with said shank and adaptedto prevent against-relative rotation but slidable relative to each otherin axial direction so as to permit axial displacement of said handleinto the operative position and out of the same to inoperative positionagainst the door suriace, means in connection with the door surface forpreventing rotation of said handle in its inoperative position, a springadapted to move the handle automatically into the operative position,resiliently operated latch bolt means adapted to automatically couplesaid handle in 'its two end positions with said v roll-back againstrelative axial displacement, and

bination of a. handle having a shank, said handle and shank having anextended or operative and a retracted or inoperative position, couplingmeans relative rotation of said shank and said roll-back and to permitaxial displacement of said shank and said handle into the operativeposition and out of the same to inoperative position. against the doorsurface, means in connection with the door surface for preventingrotation of said handle in its inoperative position, a spring adapted tomove the handle automatically into the operative position, a resilientlyoperated latch member havingtwo latching positions with respect to said.shank and adapted to automatically lock saidhandle in its two endpositions, and means within the shank operable to remove said latchmember from one of its locking positions by a movement in one directionand from the other locking position by a reverse movement. 7

' MAX PAPST. x

